Home / 81,042-122,678

Finding the Third Proportional to 81,042 and 122,678

Calculator

Solution

The third proportional to 81,042 and 122,678 is: 185,704.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042 : 122,678 = 122,678 : x
  2. Step 2: Convert to fraction form
    81,042/122,678 = 122,678/x
  3. Step 3: Cross multiply
    81,042x = 122,678 × 122,678
  4. Step 4: Simplify right side
    81,042x = 15,049,891,684
  5. Step 5: Solve for x
    x = 15,049,891,684/81,042
  6. Step 6: Final answer
    x = 185,704.84

Related Problems

Find third proportional to 40,521 and 61,339
Half scale
Find third proportional to 162,084 and 245,356
Double scale
Find third proportional to 81,044 and 122,681
Similar ratio
Find third proportional to 121,563 and 184,017
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.